Permutation-lock.



T. CARROLL.

PBBMUTATION Loox.

APPLICATION FILED DEO. 6, 1912.

Patented Apr. 7, 1914.

5 SHEETS-SHEET 1.

Mgg

'I'. CARROLL.

PERMUTATION LOCK.

APPLIGATION FILED DEG. 6, 1912.

1,092,474. Patented Apr. fr, 1914 5 SHEETS-SHEET 2.

fly 33 T. CARROLL.

PERMUTATION LOCK.

APPLIUATION FILED DB0. e, 1912.

Patented Apr. 7, 1914.

5 SHEETS-SHEET 3.

T. CARRLL.

PERMUTATION LOK.

APPLICATION FILED DBO. 6, 1912.4

1,092,474. v I Patented Apr. 7, 1914 j; 5 SHEETS-umm. il@ 30 3J. @ma i 'i I "@w /35 IF Wfl/ T. CARRULL.

PBRMUTATION LOCK.

APPLICATION FILED DB0. 6, 1912.

Patented Apr. 7, 1914.

E SHEETS-SHEET 5.

A22/me# :momes cannoni., or perron, omo.

'- PERMUTATIoN-Locmf I Speci'catrioln et Letters Patent.

Patented Apr. 7, 1914.

Application filed December 6, 1912,. i Serial No. 735,205. Y

To alllkbhom it may concern.

Bc it known that I, THoMA's CARROLL, a citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Permutation- Locks; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it 'appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to improvements in permutation locks.`

- Thev object of the invention is to provide a lock of the above type having the following novel and useful features. The insertion of a key is controlled by. auxiliary permutation lock mechanism. In other words, the permutation lock mechanism must be first set before a key can be inserted. This precludes the possibility of the lock being opened by one who may obtain possession of a key, for example, a -lost key. And further,

the insertion of `a special key is necessaryy beforethe removal of the permutation lock mechanism for the purpose of changing thel This combination, can be. accomplished, provision prevents any tampering with the combination mechanism, by unauthorized persons.

Referring in general terms to the accom panying drawings,.Figure 1 is a vertical sec tion of the lock mechanism on the lines a-a of Figs. 2, 3, 4 and 5;'Fig. v2 'is a sectionof the same on the line b-b of Fi 1; Fig. 3 is a sectionA of the same on the Tine cc= of Fig. 1; Fig. 4 is a section of the same on the line cZ-d of Fig. 1; Fig. 5` is a section on the line e-e of Fig. l; Fig. 6 is a view of the key cylinder with the key in a diii'erent position from that shown in Fig. 1; Fig. 7 is a view similar to Fig. 1 showing the manner in which the permutation tumblers or disks are removable; Fig. 8 is a partial view similar to Fig. 1, showing means for obtainiing records indicating by'what particular key the lock has been manipulated; Fig. 9 is a vertical sectional view off the key cylinder showing the means for unlocking the casing to permit of `the insertion and removal of a record; Fig. 10 is a section on the line f-,f of Fig.v 1; Fig. 11 is a side elevation of the main locking bolt; Fig. 12 isa section on the line i of Fi is a plan view of the keys; Fig. 14 is a side elevation of the lock housing showing means whereby the combination is destroyed when a key is withdrawn; Figulis a section on they line gHg of Fig.` 14; Fig. 16 is a section on t e line L-t of Fig. l5; Fig. 17 is an elevation of the lower portionof the lock housing opposite that shown in Fig. 14.

Referring more specically to the drawfings, and particularly to Figs. l, 2, and 3, 1 represents a door provided with a. pocket or recess for the reception of the lock housin 2. vWithin said housing a key cylinder .8 1s placed, the samebeing.- adapted to receive any one of .a plurality of keys 4, V5, 6, 7 and 8. The said cylinder 3 is provided with a 'cap 9 which receives a slidable shaft 10.l The cylinder 3 is adapted to .actuate a bolt 11 through the shaft'10 and a'cam 12,

which' will 'behereinafter 'more fully de-v scribed. Whenno key lies within said cylinder, or awrong k'ey is placed therein, the said cylinder cannot be rotated owing to the pins 13 and 14 which lie in pockets 15 in the housing 2 and cylinder 3. IThis expedient comprises a well known form of pin lock. The lower pins 14 are of varying lengths, and the keys are provided with co-` operating recesses 25 ofjvarying depths. The arrangement is such, that, when the recesses of ,a proper key are in a position to receive the pins 14, the upper ends of saidpins will coincide with the periphery of the key cylinder 3,- t-hereby permitting the key cylinder to rotate and to actuate the main locking bol-t 11. However, in the present case, means, consisting of a permutation lock mechanism is provided for controlling the insertiony of a key an unauthorized person, for example, one who has in some manner acquired possession of a key but is unacquainted with the combination of the nation. This permutation vlock mechanism' may be of any well known type in which the combination numbers may be selected by placing pawls 2O (Fig. 2) on 'the tumblers` 1.1 g Fig. is r in the desired notches of ratchets 21 attached to the hubs 17. The said tumblers 16 are provided with recesses 22 to receive projecting pins 23 of the upper series of pins 13., When there is no key within the Cylinder 3, the pins 13 and 14 lie in depressed positions with the pins 23 out of'the recesses 22, thus permitting the tumblers 16 to be rotated to a set position. When said tumblers are not set, and the insertion of the key within the cylinder 3 is attempted, the said key will be obstructed by the pins 14 owing7 to the pins 23 engaging the peripheries of said tumblers. When the tumblers are set, or the recesses 22 register with pins 23, a key may be inserted.

rl`he permutation lock mechanism is held in, and is permitted to be withdrawnfrom the housing by the following means. `(See Figs. 3 and 7). The innermosttumbler 16 is provided with a spring-controlled do I 26 having a projection 27 which normally rides in an annular groove 28 in the housing 2. The projection 27 maintains the permutation lock mechanism within the housing, owing to all ot the tumblers being clustered upon the shaft 18 and held thereon by a screw 29. The groove 28 is so positioned that, when the innermost tumbler 16 is in a certain position, the projection 27 is adapted to be engaged by the innermost pin 23. When it is desired to remove the permutation lock, the innermost tumbler is rotated until the projection 27 is in alinement with the innermost pin 23. This position is indicated by a number of the combination which is known to the operator. A. special key 8, shown in Figs. 7 and 13, is then inserted in the cylinder 3, and elevates the innermost pins 13, 14 and 23, suiciently to remove the projection 27 from the groove 28. rlthe remaining pins are not elevated high enough for the pins 23 to enter the recesses 22. When the latch 26 is elevated` to move the projection 27' out of the groove 28, the entire cluster of tumblers may be removed from the housing 2. lt will be noted that, when the special key 8 is inserted in the cylinder 3, the pins 13 and 14 are not elevated suhciently to release the cylinder 3, therefore, the bolt 11 cannot be actuated owino" to the imossibilit of turning said cylinder. As be ore state the said bolt is actuated when the cylinder is permitted to turn, This mechanism, in detail, is as follows. (See Figs. l, 4, 5, 11 and 121. A cam 12 actuates 'said boli: i1 indirectly through an auxiliary bolt 30 mounted inA guides 31 and on a pin '32. The guides 31 and pin32 extend from a 'late 33 which forms the rear wall of the ook casing 52. The plate 33 is mounted on the inside of the door, and is connected' with the housing 2 'by screws 34. The cam 12 is adapted to engage a shoulder 35 on the auxiliary bolt 30 Loosen to move the bolt in and to engage a cam 35S to move the bolt out. The main bolt 11 is actuated by said auxiliary bolt through a projection 3G on the end of said main bolt. The end of the auxiliary bolt engages said projection. The bolts 11 and 30 are normally held in a locked position by a locking memberj37 slidingly mounted in a boss 38 and partially controlled by a spring 39. The upper end of the member 37 lies in recesses `4() in the `bolts 1l and 30 and prevents said bolts 'being actuated from any unintended' source, such as the manipulation of the bolt by an instrumen-t inserted in the kerf between the door and the jamb. The bolts are released from engagement with the member 37 (see Fig. 12) when the cam 12 is actuated by cams 41 which latter cams are mounted on the hubof the cam 12. (See F ig. 11). The cams 41 are adapted to engage a projection 42 extending from the locking member 37, to depress said member. To actuate the main bolt 11 from the inside of the door, the following` means is provided- Journaled in the plate33 and the lower stationary portion 43 of the lock casing is a shaft 44 provided with a hand knob 4.3- which lies on the inner side of thedoor. The shaft 44 is provided with an arm 46 adapted to engage a pin 47 on said main .bolt 1l. The hub of the arm 46 is provided with a cam 48 (see Fig. 5) which is adapted to engage a projection 49 extending from the locking member 37. When the shaft 44 is oscillated by turning the knob 45, the cam 48 initially depressesthe locking member 3T, and the arm 46 subsequently actuates said bolt 11 independently of the auxiliary bolt 30. Whenever desired the lock may be used as an ordinary key lock. ln thus utilizing said lock, the key and cylinder lare turned to the position shown in Fig. (i, which, it will be observed, is the reverse of those shown in Fig. 7. In this position, the pins 14 cooperate with pins 50 which lie in pockets 51 in a manner similar to the coperation with the pins 13 in releasing the key cylinder 3.

The key may, therefore, be withdrawn and inserted in the cylinder'3 when said cylinder is in two positions, one position being that in whichv the permutation lock mecha.-` nism does not control the insertion of the key and the other being that in which it does. lt is for this purpose that the hub of the cam '12 is provided with the two cams 41. It will be understood that when the key is in the reversed position as indicated above, the use of the permutation mechanism is eliminated.

' Means are provided for obtaining a record of the persons operatin the lock. (See Figs. 1 and 5). Within t e lock casing, consisting of the plate 33, lower portion 43 and a movable portion 52, a paper roll 53 is placed, the web or leading end 54 of which passes between feed rolls 55 and 56 mounted on studs 57 extending from the plate 33. The said web` 54 also passes through a kerf in a punch housing 58 attached to and extending from t'h'e plate33. The upper' roll 55, which is the feeding roll, is provided with a ratchet 59 engaged by a pawl 60 mounted on a lever 6l. The lever 61 is pivoted on one of the studs 57 and is provided with cam slot 6 2 which receives a `pin 63 on the auxiliary bolt 30. The paper web 54 is, therefore, fed by the rollers 55 and 56 each time the auxiliary bolt is actuated. Mounted in the punch-housing 58 is a series of punches-64 each of which is adapted ,to perforate the web 54. The two inner punches are adapted to be actuated by a cam 65 while the outert'wo are adapted to be actuated by a similar cam 66. The cams 65 and 66 are connectedby a hub 67 and are mounted on the outer end of the slidable shaft V10. When one of the said cams is in an operative relation with one of its respective punches 64, the other, to-wit, cam 66,-

lies between two of the other punches.y yThis expedient permits the cams to be shifted a shorter distance than the span of the punches. The said cams 65 and 66 are maintained in a normal position or that shown in Fig. 1, by a spring 68 and alever 69 pivoted at 70, and are actuated against the tension of said spring to select one of Athe punches, by the keys 4, 5, 6 and 7, the ends 71 of which areof varying lengths as is shown'in Fig. 13.

Each of said keys is associated with a respec- A tive punph, and the ends 71 are adapted to place one of the cams 65 or 66 inoperative relation with a respective punch. When one of said keys is inserted in the cylinder 3 and is then rotated, one ofthe cams 65 or 66 will actuate one of the punches, thereby making a recordof the key thus inserted. l The cams 65'and 66 are made double in order that a record of a key ma be made either when said key is moved rom its position shown'l in Fig. l or from the reversed position shown in Fig. 6. The portion 52 of the lock casing is removable to permit of the inser-y tion yand removal of the records and is slidably and pivotally mounted on a pin 72 extending from the plate 33. (See Figs. 1, 5 and 10). rlhe said lock casing can only be opened sion of a special key 7. The casing portion- 52 is further provided with a projection 73, which extends through the plate 33 where it is engaged a spring-controlledlatch l74.v The latch 74 carries an adjustable arm 75- provided with a hook extension 76. The lsaid hook portion is shown in broken lines in Fig. 1. 4 latch 74 by means of a screw 81, and both arm and latch are provided with serrations hook extension pivoted at 92 'the lever 88.

*tluence of by authorized persons in possesf The said arm 75 is attached to the 77 which permit the arm 75 to be adjusted to different thicknesses of doors l. The hook extension 76 is adapted to be engagedv byv a stem `78 5 extending from a *,pin 79 'mounted in thecap 9, The pin 79 is adapted to be Imoved outwardlyby a cam portion 81 on the key v7. (See Fig. 13) `When said key is inserted in the cylinder 3 and the cylinder and key are turned, the

and4v thereby permit the casing portion 52 to be moved horizontally and pivotally on the pin 72 and will thus allow access to be had to the interior of the lock casing.

In order that the combination may be de\ stroyed after a key vhas been withdrawn from the position shown linlig. 1, and. to thereby prevent aperson in possession ofa key but not in possession of the combination from operating the lock, the following means -is provided. (See Sheet 5 of the drawings).

One of the tumblers 16 is provided with a cam recess 82 in operative relation with the upper end 83' of a lever 84 p-ivoted at 85 and partially controlled by a spring 86. vVlhen the recess 22 of that particular tumbler is in a position to receive itsl respective pin 23,

` the cam recess 82 of said tumbler is in aposi- 76 will lower the latch 74.

tionto receive'the end 83 of the lever 84 to cam' said tumbler and to thusdisorganize' the combination, this b eingl accomplished through the withdrawall'of the key. The lever 84'is connected at 87 to a lever 88 ypivoted4 at 89l on the-plate2. One arm "of said lever 88 lis in engagement with. a pin 90 in operative lrelation with the key 4.and mounted in the housing 2. Saidpin and arm-are adapted to be actuated by the spring 86 when the key is withdrawn. The levers 84 and 88 are normally'held in the position shown 'in Fig. 15 by a lever or detent 91 and the lower end of which -is in operative relation 4with the free end of is partially controlled by a spring 93 and is provided with a projection 94 which 4is adaptedft'o extend into a recess 95 in the key cylinder 3. When said cylinder 3 is rotated by the key, the `detent 91 is released fromengagement with the lever 88 thereby placing the levers 84 and 88 under the inthe spring 86 and the key, when said key is returned to a normal position.'

lWhen 'the key is subsequently withdrawn from the cylinderthe pin 90 will be perj The said detent or lever 91 In order to remove the tumblers from the influence of the combination-destroying mechanism above described, the following means is provided. The lever 84 is adapted to be engaged by a projection 96 ona rock shaft 97 journaled in a bearing 98 and in the plate 33. The 'shaft 97 is provided with a finger piece 99 accessibleA from within the lock casing 52, and by which said shaft is turned. "W hen the vsaid projection 96 is placed in engagement with the lever 84, the spring 86 is prevented from actuating said lever 84; an`d the tumbler-s are thus 4maintained in a set position when the key is withdrawn from the key cylinder 3.

It will of course be understood that changes more or less ofa structural character may. be made by thoseskilledin the art without affecting the functions or modes of operation of the various elements, therefore, I do not wish tobe understood as limiting myself to these, 4but on the contrary, Iv

desire to includefwithin thescope of my invention all known equivalent means.

Having described my invention, I claim,

1. In 'a lock of the type specified, a key cylinder adapted to receive a key and to be actuated thereby, permutation lock mechanism, and means interposed between said key cylinder and said lock mechanism and actuated by the kcy,Suidmeans being adapted to prevent said cylinder being actuated when `the combination of'thelock mechanism is not set. 1-

2. In a lock of the type speciied,'a cylinder adapted to receive a key, pins adapted to extend into apertures in said cylinder andl into seri-ations in a key, a permutation lock mechanism controlling the positions of said pins whereby the said key is prevented from being inserted in the cylinder until the permutation lock mechanism is set.

3. In a lock of the type specified, a housing,- permutation lock mechanism therein, a key cylinder the insertion of a key into which is controlled by said lock mechanism, means for retaining Vsaid lock mechanism in the housing, and means under the control of an inserted key whereby the said lock retaining means is controlled by said key.

4. In a lock of the type specified, a housing, a permutation lock mechanism mounted in said housing, means for retaining said l'ockmechanism in said housing, a key cylinder mounted in said housing means 1ntcrposed between said lock mechanism and said key cylinder for controlling the insertion of a key-in said cylinder, and means interposed between said lock mechanism and said key cylinder, whereby the :inserted key controls the removalof said lock mechanism from the housing.

5. In a lock of the type speciied, a housing, a permutation lock mechanism mounted in said housing, a detent for retaining said lock mechanism in said housing, a key cylinder mounted in said housing and adapted to receive a key, pins mounted in said housing and cylinder, and actuated by said key, one of said pins being also adapted to engage said detent to release said lock mechpins are actuated by said -position to be actuated by a key, said pins being under the control of said ermutation lock mechanism, whereby a key 1s prevented from being inserted until said lock mechanism is set, one set of said pins being adapted to engage said detent when actuated by another key and to thereby releasesaid lock mechanism and to permit it to be 'removed from the housing.

7. In a lock of the type specified, a housing, a key cylinder mounted in said housing, pins mounted in said housing and'in said key cylinder and controlling the movement of the key cylinder, and permutation lock mechanism controlling said pins to prevent the insertion of a key in-the cylinder until the permutation lock mechanism is set.l

8. In a lock of the type specified, a keyreceiving member adapted to be actuated by an inserted key, a permutation lock mechanism controlling theinsertion of said key, and means for destroying the combination of rsaid lock mechanism when the key is operated and withdrawn, said .last named means being under the control of said key.

9. In a lock of the type specified, a key cylinder, a permutation lock mechanism controlling the insertion of said key, and means for destroying the combination of said lock mechanism when an inserted key is withdrawn, said meansbeing under the control of the key cylinder'.y and theinserted key.

10. In a lock of the type specified, a keyreceiving member, a permutation lock mechanismv controlling the insertion of said key in said member, a lever adapted to be operated to destroy the'combination of said lock mechanism, said lever being under the control of said key-receiving member.

11. In a lock of the type specified, a keyreceiving member, a permutation lock mechanism controlling the insertion of a key in said member, a lever adapted to destroy the combination of said lock mechanism, said lever being partially under the control of the inserted key, a detent partially controlling said lever, said detent being also under the control of said key-receiving member.

combi-nation of said lock mechanism by moving one of the disks thereof, a pin in operative relation with an inserted key and. said lever, whereby said lever is partially controlled by said key, and a detent also partially controlling said lever, said detent be- 1o ing under the control. of said key-receiving member.

In testimony whereof I aflx my signature, in presence of two witnesses.

THOMAS CARROLL. Witnesses R. J. MCCARTY. MMTHEW SUBLER. 

